Decouple configuration from activation about nix-ld HOT 2 OPEN

How about a bash/zsh function that sources NIX_LD and NIX_LD_LIBRARY_PATH on demand?

from nix-ld.

Sounds great as it avoids breaking existing stuff, and it seems quite flexible (we could fetch the data the first time the user uses the command, provide various "profiles" depending on the apps to install…). Just it may be a bit annoying to write one function for every shell (there are many more shells than zsh and bash), but we can certainly eithen start a new shell like nix-shell to populate the variables and drop the user in it's wanted shell after (just if a user wants to enable it in it's .bashrc/.profile it would not work ), or additionally provide values in NIX_LD_DEFAULT so that one can just write a few export NIX_LD=NIX_LD_DEFAULT if needed. Or explicitely ask the user to pipe the output to exec or alike, providing multiple options depending on the shell.

from nix-ld.